stackoverflow.com就不介绍了，一种解决方法就是手动分析链接，使用nslookup得到hosts：

#stack overflow198.252.206.140    cdn.sstatic.net190.93.246.58      cdn-careers.sstatic.net198.252.206.17     careers.stackoverflow.com198.252.206.140    stackoverflow.com198.252.206.140    www.stackoverflow.com198.252.206.140    stackexchange.com198.252.206.140    www.stackexchange.com68.232.44.251      static.adzerk.net203.190.124.28     pixel.quantserve.com54.243.104.88      stack.imgur.com54.243.104.88      i.stack.imgur.com198.144.96.59      scorecardresearch.com198.144.96.59      b.scorecardresearch.com184.85.171.120     sb.scorecardresearch.com209.116.151.162    edge.quantserve.com198.252.206.21     stackauth.com199.193.114.165    ssl.mousestats.com173.194.70.95      ajax.googleapis.com

　　把这些内容追加到 /etc/hosts 即可，搜索结果中打开 stackoverflow.com可以秒开，打开 careers.stackoverflow.com 就无能为力了，会稍微慢一点。